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Finding the Fourth Proportional to 315,645.30, 435,477.33 and 186,556.68

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Solution

The fourth proportional to 315,645.30, 435,477.33 and 186,556.68 is: 257,381.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,645.30 : 435,477.33 = 186,556.68 : x
  2. Step 2: Convert to fraction form
    315,645.30/435,477.33 = 186,556.68/x
  3. Step 3: Cross multiply
    315,645.30x = 435,477.33 × 186,556.68
  4. Step 4: Simplify right side
    315,645.30x = 81,241,204,900.06
  5. Step 5: Solve for x
    x = 81,241,204,900.06/315,645.30
  6. Step 6: Final answer
    x = 257,381.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.